Update SKPs documentation link
Update SKPs documentation link

Change-Id: I4bc1e4c331029d0939fa28910c6cbbc9697d666d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/541721
Reviewed-by: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>

google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia